نتایج جستجو برای: initial burst release

تعداد نتایج: 598255  

2011
Marziyeh Jannesari Jaleh Varshosaz Mohammad Morshed Maedeh Zamani

The aim of this study was to develop novel biomedicated nanofiber electrospun mats for controlled drug release, especially drug release directly to an injury site to accelerate wound healing. Nanofibers of poly(vinyl alcohol) (PVA), poly(vinyl acetate) (PVAc), and a 50:50 composite blend, loaded with ciprofloxacin HCl (CipHCl), were successfully prepared by an electrospinning technique for the ...

Journal: :The Journal of the Acoustical Society of America 1987

Journal: :Journal of biomedical materials research. Part A 2009
M C Hacker A Haesslein H Ueda W J Foster C A Garcia D M Ammon R N Borazjani J F Kunzler J C Salamone A G Mikos

The function of a photocrosslinked poly(propylene fumarate) (PPF)/poly(N-vinyl pyrrolidone) (PVP) matrix for the sustained release of three ophthalmic model drugs, acetazolamide (AZ), dichlorphenamide (DP), and timolol maleate (TM), was investigated. The drugs differ in molecular weight and degree of dissociation in aqueous environments; both are parameters that significantly influence drug dif...

Journal: :Journal of biomaterials science. Polymer edition 2011
Xiaoying Wang Lisa A Gurski Sheng Zhong Xian Xu Darrin J Pochan Mary C Farach-Carson Xinqiao Jia

Amphiphilic block co-polymers consisting of hydrophilic poly(ethylene glycol) and hydrophobic polyester bearing pendent cyclic ketals were synthesized by ring-opening co-polymerization of ε-caprolactone (CL) and 1,4,8-trioxaspiro-[4,6]-9-undecanone (TSU) using α-hydroxyl, ω-methoxy, poly(ethylene glycol) as the initiator and stannous octoate as the catalyst. Compositional analyses indicate that...

احمد مسعود, , مریم دبیر, , گیتی ثمر, ,

Although cellular immunity involving activated macrophage is important in resistance to Brucella infections, serum factors and polymorphonuclears (PMNs) play some role in the initial responses to Brucella infections. In this research, we studied respiratory burst of PMNs against opsonized yeast and opsonized inactivated Brucella melitensis in chronic Brucellosis patients and controls with no pr...

Journal: :research in pharmaceutical sciences 0

double emulsion solvent evaporation technique is one of the most attractive methods used to prepare micro and nanoparticles in pharmaceutical areas of interest, but because of the effects of many formulation factors on the size and release behavior of the fabricated particles, optimization of the formulation factors is needed. in this study various parameters including technical and composition...

2008
Xiomara A. Perez Tanuja Bordia J. Michael McIntosh Sharon R. Grady Maryka Quik

asterisk indicates the possible presence of other nicotinic subunits in the receptor complex. ABSTRACT Nicotine treatment has long been associated with alterations in α4β2* nicotinic acetylcholine receptor (nAChR) expression that modify dopaminergic function. However, the influence of chronic nicotine treatment on the α6β2* nAChR, a subtype specifically localized on dopaminergic neurons, is les...

Journal: :Fibers 2023

Over the years, scientists have been continually striving to develop innovative solutions design and fabricate medicines with improved therapeutic potential. Conventional dosage forms, such as tablets, capsules, injections, are limited when exploited for advanced therapeutics, drug targeting. To cater these limitations, nanofibres emerged novel nanomaterials provide enhanced bioavailability, ta...

Journal: :Geomechanics and geophysics for geo-energy and geo-resources 2023

Abstract Coal burst is one of the principal hazards in development panels underground coal mines. This study develops a practical approach to quantitatively estimate proneness roadways. A rigorous numerical and statistical conducted establish novel rating (BPR) system based on energy release characteristics. The includes eight geological geotechnical factors covers wide range inputs. dataset in...

2013
Issa Amjadi Mohammad Rabiee Motahare-Sadat Hosseini

Attempts have been made to prepare nanoparticles based on poly(lactic-co-glycolic acid) (PLGA) and doxorubicin. Biological evaluation and physio-chemical characterizations were performed to elucidate the effects of initial drug loading and polymer composition on nanoparticle properties and its antitumor activity. PLGA nanoparticles were formulated by sonication method. Lactide/glycolide ratio a...

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